Mobile telecommunication system with adaptive handoff mechanism and method of operation thereof

1. A method of operation of a mobile telecommunication system comprising:

measuring a measured target power and a measured server power;

predicting a future target power and a future server power for a prediction tap number from when the measured target power and the measured server power are measured;

computing an estimation error and a prediction error associated with the future target power and the future server power;

determining a handoff hysteresis level with a control unit based on the estimation error and the prediction error; and

sending a handoff trigger for transferring a mobile station from a server station to a target station when the future target power minus both the future server power and the handoff hysteresis level is greater than zero;

receiving a handoff status message for indicating whether the mobile station have been handed-off based on the handoff trigger without service failure;

updating a handoff count and a service failure count on a first storage unit based on the handoff status message; and

wherein:

determining the handoff hysteresis level includes determining the handoff hysteresis level based on the handoff count and the service failure count.

2. The method as claimed in claim 1 wherein determining the handoff hysteresis level includes increasing the handoff hysteresis level when the estimation error plus the prediction error is greater than an error threshold.

3. The method as claimed in claim 1 wherein determining the handoff hysteresis level includes decreasing the handoff hysteresis level when the estimation error plus the prediction error is less than the error threshold.

4. The method as claimed in claim 1 further comprising:

calculating a wrong handoff probability from the handoff hysteresis level; and

wherein:

determining the handoff hysteresis level includes modifying the handoff hysteresis level when the wrong handoff probability is below a wrong handoff threshold.

5. A method of operation of a mobile telecommunication system comprising:

measuring a measured target power and a measured server power;

predicting a future target power and a future server power for a prediction tap number from when the measured target power and the measured server power are measured;

computing an estimation error and a prediction error associated with the future target power and the future server power;

determining a handoff hysteresis level with a control unit based on the estimation error and the prediction error;

sending a handoff trigger for transferring a mobile station from a server station to a target station when the future target power minus both the future server power and the handoff hysteresis level is greater than zero for longer than a time-to-trigger;

receiving a handoff status message for indicating whether the mobile station have been handed-off based on the handoff trigger without service failure;

updating a handoff count and a service failure count on a first storage unit based on the handoff status message; and

wherein:

determining the handoff hysteresis level includes determining the handoff hysteresis level based on the handoff count and the service failure count.

6. The method as claimed in claim 5 further comprising:

calculating a handoff probability and a service failure probability based on the prediction error; and

wherein:

determining the handoff hysteresis level includes determining the handoff hysteresis level based on calculated the handoff probability and the service failure probability.

7. The method as claimed in claim 5 wherein computing the estimation error includes computing the estimation error as proportional to an inverse of the measured target power and the measured server power.

8. The method as claimed in claim 5 wherein computing the prediction error includes modeling the prediction error as having a Gaussian distribution based on the prediction tap number.

9. The method as claimed in claim 5 wherein determining the handoff hysteresis level includes determining the handoff hysteresis level by minimizing the handoff hysteresis level based on a cost function optimized to balance the handoff probability against the service failure probability.

10. A mobile telecommunication system comprising:

a hardware control unit configured to:

measure a measured target power and a measured server power,

predict a future target power and a future server power for a prediction tap number from when the measured target power and the measured server power are measured,

compute an estimation error and a prediction error associated with the future target power and the future server power,

determine a handoff hysteresis level based on the estimation error and the prediction error,

send a handoff trigger for transferring a mobile station from a server station to a target station when the future target power minus both the future server power and the handoff hysteresis level is greater than zero, and

a communication unit, coupled to the control unit, configured to:

receive a handoff status message from the server station; and

wherein the hardware control unit is configured to:

indicate whether the mobile station have been handed-off based on the handoff trigger without service failure;

update a handoff count and a service failure count on a first storage unit; and

determine the handoff hysteresis level based on the handoff count and the service failure count.

11. The system as claimed in claim 10 wherein the hardware control unit is configured to increase the handoff hysteresis level when the estimation error plus the prediction error is greater than an error threshold.

12. The system as claimed in claim 10 wherein the hardware control unit is configured to decrease the handoff hysteresis level when the estimation error plus the prediction error is less than the error threshold.

13. The system as claimed in claim 10 wherein the hardware control unit is configured to:

calculate a wrong handoff probability from the handoff hysteresis level; and

modify the handoff hysteresis level when the wrong handoff probability is below a wrong handoff threshold.

14. The system as claimed in claim 10 wherein the hardware control unit is configured to send the handoff trigger for the mobile station to be handed-off from the server station to the target station when the future target power minus both the future server power and the handoff hysteresis level is greater than zero for longer than a time-to-trigger.

15. The system as claimed in claim 14 wherein the hardware control unit is configured to:

calculate a handoff probability and a service failure probability based on the measured target power, the measured server power, and the estimation error; and

determine the handoff hysteresis level based on calculated the handoff probability and the service failure probability.

16. The system as claimed in claim 14 wherein the hardware control unit is configured to compute the estimation error as proportional to an inverse of the measured target power and the measured server power.

17. The system as claimed in claim 14 wherein the hardware control unit is configured to predict the prediction error includes modeling the prediction error as having a Gaussian distribution based on the prediction tap number.

18. The system as claimed in claim 14 wherein the hardware control unit is configured to determine the handoff hysteresis level by minimizing the handoff hysteresis level based on a cost function optimized to balance the handoff probability against the service failure probability.